2100HP 75PSI Supra | X275 Drag Radial Class Racing [TECH TALK]

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What's the point of drag racing if you're limiting performance via rules and regulations?

Varun Sharma gives us a rundown on the 3.3L 2100HP at 75PSI Oceania College/101 Motorsport X275 Drag Radial JZA80 Supra which runs a methanol fed Bullet Race Engineering Billet block-based 2jz engine with a best ET of 6.79s at 212mph making it the fastest Sport Compact in Australia at the time of filming at Sydney Jamboree.

Discussed is the decision behind running a TH400 3 speed automatic and the lock up converter setup that is required to prevent transmission slippage as they dial the power level higher and higher. The safety a billet block offers is also touched on along with how despite the extra weight the team run a water to air intercooler setup. We also talk about some of the class limitations including the tyre size which see any loss of traction turned into an aborted run and how the old independent rear suspension setup is much more difficult to get dialled in for the drag strip along with behaving differently too.

The X275 Drag Radial class sees competitors restricted by tyre and power adder sizes among other rules added and changed over the years around the use of a stock location firewall, factory roof and quarters and an emphasis on equipment that was originally produced in an OEM form or is readily available in the aftermarket. As Varun explains this, along with the use of a 1/8th mile strip at many events, helps keep the competition close and the costs lower to help ensure a healthy field of competitors.

0:00 - Introduction
0:49 - Why A Restricted Class?
1:46 - How Limiting are 275 Radials
3:12 - What Is Controlled?
3:58 - Chassis Setup
5:27 - IRS vs Live Axle Rear
7:31 - Supra Setup
8:12 - Water To Air Intercooling
10:09 - Bullet Billet Block
12:03 - Why Billet?
13:04 - Transmission
14:28 - Lock Up Converter
17:35 - Outro

#highperformanceacademy #dragracing #101motorsports #x275 #2jz #jamboree #motorsport #dragradial #jamboree
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Thanks Andre, always a pleasure. And thanks for the kind words guys, always a battle trying to put together words on the spot but Andre knows where to pick up. We don't mind giving up our strategies, we're all for helping more people go faster. Still a lot more to come from this car! Peace ✌🏾

MOTORSPORT
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Such a good interviewer, when he stumbles you give a little nudge to help him along but never override what he's saying.

iPROFITDON
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What a great interview he didnt mind giving up some of his strategies and explaining how it works.

TheAnonymousone
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Locking the converter is key. On my supra i would gain a little over 100whp just locking the converter on the dyno. I remember once it was 400whp on 15psi. Locked it and it went 470whp on 15psi
Same tunr back to back. At higher boost it picked up even more. 4l80e is thr transmission you want for a street/track supra.

racingsfun
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Refreshing honest interview, i wish him well racing 👍

ben
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Really appreciate the timestamps! Wish more videos had this.

GrimReaper
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Another Great Interview from Andre and the Boys!! 🤙💪

cpolt
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This video was awesome I feel like I've learned so much.

admireinspire
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I could see DOCILE on four of those X275 radials and Andre, Ben, and the whole team putting it to the ultimate test at Kenda against the RWD monsters. 😈👍

MafiaboysWorld
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It's all about the hit .. radials are the future!

MmeDesgranges
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0:04, that compressor wheel nut looks good and tight.

DoogieLabs
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Sometimes I talk like this guy where you don't speak properly and it's so annoying. Good stuff overall

finnian